<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../js/vue.js"></script>
</head>
<body>
    <div id="root">
        <h2>人员列表</h2>
        <!-- 遍历数组 -->
        <button @click="updateMei">更新马冬梅</button>
        <ul>
            <li v-for="p in persons" :key="p.id">
                {{p.name}}-{{p.age}}-{{p.sex}}
            </li>
        </ul>
    </div>
    <script>
        Vue.config.productionTip = false

        // 用computed实现
        new Vue({
            el:"#root",
            data:{
                persons:[
                    {id:'001',name:"马冬梅",age:30,sex:"女"},
                    {id:'002',name:"周冬雨",age:31,sex:"女"},
                    {id:'003',name:"周杰伦",age:18,sex:"男"},
                    {id:'004',name:"温兆伦",age:19,sex:"男"}
                ]
            },
            methods: {
                updateMei(){
                    // this.persons[0].name = "马老师",//奏效
                    // this.persons[0].age = 50,//奏效
                    // this.persons[0].sex = "男"//奏效
                    // this.persons[0] = {id:'001',name:"马老师",age:50,sex:"男"}//不奏效
                    this.persons.splice(0,1,{id:'001',name:'马老师',age:50,sex:'男'})
                }
            },
        })
    </script>
</body>
</html>